SEARCH Articles Figures Tables 14C labelling 14C-Labelled substrate 14C-labeled 14C-labeled 14C-labeled amino acid 14C-labeled drug 14C-labelled compounds 14C-labelled compounds Acetate 14C-labelled compounds Arginine 14C-labelled compounds Glucose 14C-labelled compounds Methionine 14C-labelled compounds Mevalonate 14C-labelled compounds Phenylalanine 14C-labelled compounds Tyrosine Carbohydrates, exchange labeling 14C]carbon monoxide Carbon 14C as isotopic label Carbon 14C as isotopic label in Claisen Or 14C-labelled Synthesis of 14C-labeled